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          <h1 class="post-title" itemprop="name headline">PAT A1055</h1>
        

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        <p>Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world’s wealthiest people. Now you are supposed to simulate this job, but concentrate only on the people in a certain range of ages. That is, given the net worths of N people, you must find the M richest people in a given range of their ages.</p>
<p>Input Specification:</p>
<p>Each input file contains one test case. For each case, the first line contains 2 positive integers: N (&lt;=105) - the total number of people, and K (&lt;=103) - the number of queries. Then N lines follow, each contains the name (string of no more than 8 characters without space), age (integer in (0, 200]), and the net worth (integer in [-106, 106]) of a person. Finally there are K lines of queries, each contains three positive integers: M (&lt;= 100) - the maximum number of outputs, and [Amin, Amax] which are the range of ages. All the numbers in a line are separated by a space.</p>
<p>Output Specification:</p>
<p>For each query, first print in a line “Case #X:” where X is the query number starting from 1. Then output the M richest people with their ages in the range [Amin, Amax]. Each person’s information occupies a line, in the format</p>
<p>Name Age Net_Worth<br>The outputs must be in non-increasing order of the net worths. In case there are equal worths, it must be in non-decreasing order of the ages. If both worths and ages are the same, then the output must be in non-decreasing alphabetical order of the names. It is guaranteed that there is no two persons share all the same of the three pieces of information. In case no one is found, output “None”.<br>Sample Input:<br>12 4<br>Zoe_Bill 35 2333<br>Bob_Volk 24 5888<br>Anny_Cin 95 999999<br>Williams 30 -22<br>Cindy 76 76000<br>Alice 18 88888<br>Joe_Mike 32 3222<br>Michael 5 300000<br>Rosemary 40 5888<br>Dobby 24 5888<br>Billy 24 5888<br>Nobody 5 0<br>4 15 45<br>4 30 35<br>4 5 95<br>1 45 50<br>Sample Output:<br>Case #1:<br>Alice 18 88888<br>Billy 24 5888<br>Bob_Volk 24 5888<br>Dobby 24 5888<br>Case #2:<br>Joe_Mike 32 3222<br>Zoe_Bill 35 2333<br>Williams 30 -22<br>Case #3:<br>Anny_Cin 95 999999<br>Michael 5 300000<br>Alice 18 88888<br>Cindy 76 76000<br>Case #4:<br>None<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br></pre></td><td class="code"><pre><span class="line">#include &quot;stdio.h&quot;</span><br><span class="line">//#include &quot;math.h&quot;</span><br><span class="line">#include &quot;string.h&quot;</span><br><span class="line">#include &quot;algorithm&quot;</span><br><span class="line">using namespace std;</span><br><span class="line">struct person&#123;</span><br><span class="line">    char name[10];</span><br><span class="line">    int age;</span><br><span class="line">    int worth;</span><br><span class="line">&#125;ps[100010],valid[100010];</span><br><span class="line">int age[100010] = &#123;0&#125;;</span><br><span class="line">bool cmp (person a, person b)&#123;</span><br><span class="line">    if (a.worth != b.worth) &#123;</span><br><span class="line">        return a.worth &gt; b.worth;</span><br><span class="line">    &#125;else if(a.age != b.age)&#123;</span><br><span class="line">        return a.age &lt; b .age;</span><br><span class="line">    &#125;else&#123;</span><br><span class="line">        return strcmp(a.name, b.name) &lt; 0;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line">int main()&#123;</span><br><span class="line">    int n, k;</span><br><span class="line">    scanf(&quot;%d%d&quot;, &amp;n, &amp;k);</span><br><span class="line">    for (int i = 0 ; i &lt; n ; i++) &#123;</span><br><span class="line">        scanf(&quot;%s%d%d&quot;, ps[i].name, &amp;ps[i].age, &amp;ps[i].worth);</span><br><span class="line">    &#125;</span><br><span class="line">    sort(ps, ps + n, cmp);</span><br><span class="line">    int validnum = 0;//预处理 每个年龄不超过100人</span><br><span class="line">    for (int i = 0 ; i &lt; n ; i++) &#123;</span><br><span class="line">        if (age[ps[i].age] &lt; 100) &#123;</span><br><span class="line">            age[ps[i].age]++;</span><br><span class="line">            valid[validnum++] = ps[i];</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">    int m, agelow, agehigh;</span><br><span class="line">    for (int i = 1 ; i &lt;= k ; i++) &#123;</span><br><span class="line">        scanf(&quot;%d%d%d&quot;, &amp;m, &amp;agelow, &amp;agehigh);</span><br><span class="line">        printf(&quot;Case #%d:\n&quot;, i);</span><br><span class="line">        int printnum = 0;</span><br><span class="line">        for (int j = 0 ; j &lt; validnum &amp;&amp; printnum &lt; m; j++) &#123;</span><br><span class="line">            if (valid[j].age &gt;= agelow &amp;&amp; valid[j].age &lt;= agehigh) &#123;</span><br><span class="line">                printf(&quot;%s %d %d\n&quot;,valid[j].name, valid[j].age, valid[j].worth);</span><br><span class="line">                printnum++;</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">        if (printnum == 0) &#123;</span><br><span class="line">            printf(&quot;None\n&quot;);</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">    return 0;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
<p>本题需要进行预处理，同年龄的超过100人就不用再记录到新的数组中了，减少时间复杂度。</p>

      
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